Câu hỏi:
03/07/2025 2Cho sơ đồ biến hóa sau (mỗi mũi tên là 1 phản ứng):
Công thức cấu tạo của E là
CH2=C(CH3)COOC2H5.
CH2=C(CH3)COOCH3.
CH2=C(CH3)OOCC2H5.
CH3COOC(CH3)=CH2.
Trả lời:
Trả lời bởi Docx
E -(1)→ X -(2)→ G -(3)→ T -(4)→ metan -(5)→ Y -(6)→ axit metacrylic -(7)→ F -(8)→ poli etylmetacrylic
(1) CH2=C(CH3)COOC2H5 (E) + NaOH → CH2=C(CH3)COONa + C2H5OH (X)
(2) C2H5OH (X) + O2 -to, xt→ CH3COOH (G) + H2O
(3) CH3COOH (G) + NaOH → CH3COONa (T) + H2O
(4) CH3COONa + NaOH -CaO, to→ CH4 + Na2CO3
(5) CH2=C(CH3)COOC2H5 (E) + NaOH → CH2=C(CH3)COONa (Y) + C2H5OH
(6) CH2=C(CH3)COONa + HCl → CH2=C(CH3)COOH (axit metacrylic) + NaCl
(7) CH2=C(CH3)COOH + CH3OH ⇆ CH3=CH(CH3)COOCH3 (F) + H2O
(8) CH3=CH(CH3)COOCH3 → -(C-CH3=CH(CH3)(COONa)-)n
→ Đáp án A
E -(1)→ X -(2)→ G -(3)→ T -(4)→ metan -(5)→ Y -(6)→ axit metacrylic -(7)→ F -(8)→ poli etylmetacrylic
(1) CH2=C(CH3)COOC2H5 (E) + NaOH → CH2=C(CH3)COONa + C2H5OH (X)
(2) C2H5OH (X) + O2 -to, xt→ CH3COOH (G) + H2O
(3) CH3COOH (G) + NaOH → CH3COONa (T) + H2O
(4) CH3COONa + NaOH -CaO, to→ CH4 + Na2CO3
(5) CH2=C(CH3)COOC2H5 (E) + NaOH → CH2=C(CH3)COONa (Y) + C2H5OH
(6) CH2=C(CH3)COONa + HCl → CH2=C(CH3)COOH (axit metacrylic) + NaCl
(7) CH2=C(CH3)COOH + CH3OH ⇆ CH3=CH(CH3)COOCH3 (F) + H2O
(8) CH3=CH(CH3)COOCH3 → -(C-CH3=CH(CH3)(COONa)-)n
→ Đáp án A
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